Re: A86: check keyboard

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: check keyboard
From: "Dux Gregis" <assets@eden.rutgers.edu>
Date: Tue, 1 Dec 1998 16:16:02 -0500
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org





>
>In a message dated 11/30/98 22:57:10 Eastern Standard Time,
rabidcow@juno.com
>writes:
>
>> probably, but i doubt anyone has every rom version to say.  they look to
>>  be the same in 1.2 and 1.3 at least (no guarantee)
>>
>>  there's no reason why $4064 shouldn't work, here's the code there:
>>   call $01a1
>>   ret
>>  maybe you've got the wrong page d address?
>>
>>  -josh
>>
>
>
>does anybody have any idea why the rom page d addresses are "call xx \ ret"
>when they could just be "jp xx"??

Perhaps so that it forces page $0d to be swapped back?  TI obviously knew it
could use jp because the are many places on page $0d where it uses that in
place of calls.